|Return to Venus - NASA Goddard Space Flight Center|
From Galileo and the heliocentric model of the solar system to James Hansen's research on the greenhouse effect, observations of the planet Venus throughout history have given us the perspective we need to understand our own place in the universe. Yet with nearly two decades since the last U.S. mission there, our sister planet has received little attention in recent years. 'Return to Venus' provides a look back at the history of Venus exploration, how human perceptions of the planet have changed...
Keywords: History and philosophy of science, Venus, Edited Feature, Planets; What -- Galileo; What -- Venus; Where -- Georgia
|Venus: Long Time, No See - NASA Goddard Space Flight Center|
The last U.S. spacecraft mission to Venus was in 1989 with the launch of Magellan. Even though Magellan spent the next five years radar mapping the surface and gathering high resolution gravity data, much remains a mystery about our so-called sister planet. Did Venus experience a run-a-way greenhouse effect at some point in its history? Why is the surface pressure 90 times greater on Venus then on Earth? Why is the planet so hot? These are only a few of the question that must be answered if we a...
Keywords: Space science, Venus, Solar System, Edited Feature, Planets; What -- Venus; What -- Magellan; What -- Earth; Where -- Georgia
|Rain, Drought, Urbanization Contributing Factors for Storms - NASA/Goddard Space Flight Center and Ivy Flores (UMBC)|
On March 14, 2008, a tornado swept through downtown Atlanta, its 130 mile-per-hour winds ripping holes in the roof of the Georgia Dome, blowing out office windows and trashing parts of Centennial Olympic Park. It was an event so rare in an urban landscape that researchers immediately began to examine NASA satellite data and historical archives to see what weather and climatological ingredients may have combined to brew such a storm...
Keywords: Atlanta, Atmospheric science, Environmental science, HDTV, Heat Island, Human geography, Moisture, Natural hazards, Earth Science, Atmosphere, Atmospheric Phenomena, Drought, Earth Science, Atmosphere, Atmospheric Phenomena, Tornados, Earth Science, Atmosphere, Precipitation, Rain, Earth Science, Human Dimensions, Environmental Impacts, Urbanization; What -- Earth; Where -- Atlanta; Where -- Georgia